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All results from a given calculation for CH3CHF2 (Ethane, 1,1-difluoro-)

using model chemistry: CCSD(T)/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCSD(T)/6-31G(2df,p)
 hartrees
Energy at 0K-277.786750
Energy at 298.15K 
HF Energy-276.962756
Nuclear repulsion energy132.731798
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CCSD(T)/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3188 3188        
2 A' 3095 3095        
3 A' 3092 3092        
4 A' 1502 1502        
5 A' 1459 1459        
6 A' 1407 1407        
7 A' 1193 1193        
8 A' 1163 1163        
9 A' 886 886        
10 A' 573 573        
11 A' 466 466        
12 A" 3184 3184        
13 A" 1510 1510        
14 A" 1436 1436        
15 A" 1201 1201        
16 A" 984 984        
17 A" 374 374        
18 A" 234 234        

Unscaled Zero Point Vibrational Energy (zpe) 13473.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13473.5 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CCSD(T)/6-31G(2df,p)
ABC
0.31836 0.30097 0.17375

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.327 0.161 0.000
C2 -0.911 1.025 0.000
H3 1.262 0.733 0.000
F4 0.327 -0.641 1.093
F5 0.327 -0.641 -1.093
H6 -1.791 0.379 0.000
H7 -0.925 1.657 0.891
H8 -0.925 1.657 -0.891

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50931.09581.35611.35612.12932.14402.1440
C21.50932.19182.34602.34601.09211.09191.0919
H31.09582.19181.98951.98953.07332.53522.5352
F41.35612.34601.98952.18582.59282.62493.2838
F51.35612.34601.98952.18582.59283.28382.6249
H62.12931.09213.07332.59282.59281.78211.7821
H72.14401.09192.53522.62493.28381.78211.7812
H82.14401.09192.53523.28382.62491.78211.7812

picture of Ethane, 1,1-difluoro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 108.812 C1 C2 H7 109.985
C1 C2 H8 109.985 C2 C1 H3 113.621
C2 C1 F4 109.808 C2 C1 F5 109.808
H3 C1 F4 107.998 H3 C1 F5 107.998
F4 C1 F5 107.401 H6 C2 H7 109.368
H6 C2 H8 109.368 H7 C2 H8 109.306
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability